JPH08220486A - Spectacle frame - Google Patents

Abstract

PURPOSE: To make it possible to neatly and exactly attain the fitting of them temple bent parts of spectacles to the side head part on the rear side of the ears. CONSTITUTION: This spectacle frame is formed by shaping the temple bent parts 11 fixed or held in the side head part on the rear side of the ears to a shape approximately complying with the rugged shapes of the side head part at the length ending slightly shorter than the standard length of the general temple bent parts. Ball ends 3 are positioned and mounted at the temple ends by wire or leaf springs 2 of soft spring force in the positions where these ball ends come into contact with the side head parts in the second half side regions (b) of the recessed parts in the rugged parts of the side head parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eyeglass frame which is devised to prevent the eyeglasses from sliding down during wearing.

In the fitting of eyeglasses, the frame hits the correct position on the head and is fixed or retained (sometimes referred to by those skilled in the art. This fixing or retaining is hereinafter referred to as “retention”). , It is said that the nerve line should not be squeezed, and that it should be able to obtain a hit or restraint that feels as if it envelops the whole body rather than hitting it partially.

Regarding the retention of the temple bending portion necessary for that purpose, the following matters are important, which will be described next with reference to FIG. 6 (plan view).

The shape of the back of the ear, which plays an important role in wearing spectacles, is rough for many people, as shown in FIG. In order to fit the temple bends to the irregularities, the temple bends should be in surface contact with the entire back of the ear to the back of the ear. Further, it is effective to firmly press the concave and convex portions in the first half side area B, and it is sufficient to make contact with the second half side area B. Even if it is strongly pressed in the area (b), the effect of temple retention is poor with respect to the concave portion composed of the areas (a) and (b), and it does not contribute to the prevention of eyeglass slide.

However, the shape of the irregularities varies from person to person, and it is well known to those skilled in the art to adjust the area B to contact the temple bending portion with the entire surface contact. It is extremely difficult to say that it is practically impossible.

[0006]

2. Description of the Related Art Heretofore, it has not been achieved yet to simply and accurately fit a temple bent portion into a concave portion of the concavo-convex portion of the back of the ear.

By the way, conventionally, the fitting of the temple bending portion of the spectacle frame can be performed by adjusting the inclination angle of the portion and the flap (bending the modern end from the inner side to the outer side so as to match the unevenness of the back side of the ear). While doing this,
Although the specifications are such that the quality of the adjustment is judged by the feeling of wearing glasses, the fit due to the initial adjustment is hardly successful even when worn for a long time. In fact, the eyeglass wearer often complains of a poor fit within a short time after adjustment, and in many cases, the eyeglass slides down during wearing due to a poor fit.

Further, conventionally, in order to prevent the spectacle frame from slipping down, the bending of the modern is strengthened, or the modern is formed into a shape or structure which is hooked on the rear part of the auricle, or has a configuration substantially similar thereto. A measure was taken to attach the hold to the temple. According to these, with eyeglasses wearing, it is not possible to obtain a feeling of wrapping around the eyewear, and the eyeglasses are too fixed to the face, modern and hold,
Since the nose pad presses the pinna, blood vessels of the nose, and nerves, resulting in pain and discomfort, there is a problem that it causes inconvenience even when wearing for a general duration. Further, since the eyeglasses can be put on and taken off easily due to the modern shape, structure or hold, there is a problem that the eyeglasses are considerably inferior in ease as compared with a general eyeglass frame having no such shape.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to develop a spectacle frame capable of achieving fitting of a temple bending portion to the back of the ear temporal region simply and accurately.

[0010]

The feature of the spectacle frame of the present invention is that the length of the temple bending portion retained in the back of the ear is slightly shorter than the standard length of the general temple bending portion. , And the temple end is formed only by a line or a leaf spring having a flexible spring force in a shape substantially conforming to the concavo-convex shape of the temporal portion, and the temporal portion in the second half region of the concave portion in the irregularity of the temporal portion. The wire or leaf spring is located at a position where it comes into contact with, and the wire or leaf spring may be one or a plurality of springs arranged in parallel.

[0011]

The present invention will now be described with reference to the drawings showing the embodiments of the present invention.

The curved portion 11 of the temple 1 retained on the back of the ear behind the head (the portion from the half point of the modern to about 0 to the modern end) is slightly shorter than the standard length of the curved portion of a general-purpose temple. The length, in other words, the length that ends almost at the boundary between the regions A and B of the concave portion in the concavo-convex portion of the ear back temporal region, and is shaped to substantially conform to the concavo-convex shape of the temporal portion. The temple 1 does not matter whether it is a plastic temple or a metal temple, that is, a main part is made of metal and a part in contact with the back of the ear is modern.

At the temple end of the temple bending portion 11, a chisel 3 is attached by a wire or a leaf spring 2. The spring 2 is filled with a flexible spring force, and the chisel 3 is located in the second half region b of the concave portion of the concave-convex portion of the back of the ear and is located at a position in contact with the temporal region. The attachment is made.

The wire or leaf spring 2 is filled with one wire (FIGS. 3 and 4) or a plurality of wires (FIG. 5). When using multiple books,
Two wires or leaf springs 2 are sufficient. A plurality of wires or leaf springs 2 are arranged in parallel.

The spectacle frame may be an ultra-slim, lightweight type as shown in FIGS. 1 and 3, or a standard type as shown in FIG.

The position of the concave-convex portion of the back of the ear that should hold the temple bending portion 11 is not necessarily limited because it varies from person to person, but generally the inclination angle θ of the temple bending portion 11 is about 120 °. It is good to say The inclination angle of this degree is the standard area of a general temple bending part for locating the lever 3 in the region of the second half of the concave portion of the concave-convex part of the ear temporal region in contact with the temporal region. This positioning can be accomplished in a way that accommodates more people, with a certain length of temple bends that are slightly shorter than the length.

Generally, the distance between the chisel 3 and the tip of the temple end of the temple bending portion 11 is 2-3.
About mm is suitable.

The indicated flexibility of the spring force of the wire or leaf spring 2 is
It can be varied over a wide range in relation to the spring stiffness of the temple 1, and is generally referred to by those skilled in the art as "watari" in the technical field of the eyeglass industry, for example, when the spring stiffness of the temple is the most rigid. If the spring stiffness of the temple is the softest, the stainless steel wire used for the member (a kind of decorative member attached to the left and right lens edges on the upper side of the bridge) should have a flexibility of spring force of about 0.8 mm in diameter. Then, the above-mentioned stainless steel wire may have a flexibility of spring force of about 0.54 mm in diameter.

In the temple whose spring stiffness is between the stiffness and the softness, the flexibility of the spring force of the spring 2 is designed with the flexibility of the "stiffest" or "softest" as a guide. It can be specified.

Although the uneven shape of the temporal region of the ear behind which the temple curved portion should be retained is varied due to individual differences, the present invention allows the temple curved portion to approximately follow the uneven shape of the temporal portion. It is in the outline form.

Therefore, in order to obtain a good fitting of the temple bent portion to the back of the ear, the lack of consistency of the shape of the temple bent portion with respect to the concavo-convex uneven portion must be compensated for. I have to.

In the present invention, the temple bent portion is set to the above-mentioned predetermined length, only the temple end of this is positioned at a predetermined position, and the temple bent portion is attached by a flexible wire or leaf spring 2.

This configuration makes up for the lack of pre-indicative consistency. That is, the predetermined length of the tumble bend makes it possible to hold the front half area a of the concave portion in the temporal concavo-convex portion substantially firmly, and only the flexible spring force of the wire or leaf spring allows the latter half area of the concave portion. While being lightly pressed against the groove (b), the pressure contact fits well into the depression of the area (b), thereby compensating for the lack of retention due to the temple bend portion and making it possible to obtain a good fitting.

Thus, according to the present invention, by using the temple curved portion having a shape approximately conforming to the shape of the back side of the ear, the required fitting for the temple curved portion can be simply and accurately performed.

In the case where a plurality of wires or leaf springs having only temple ends attached are arranged in parallel, only one spring is more stably pressed against the second half area B of the concave portion of the side surface unevenness. As a result, the effect of compensating for the shortage of retention of the curved portion of the temple becomes better.

In the case where a plurality of wires or leaf springs are arranged in parallel, the following results can be obtained.

When the number of wires or leaf springs is one and the metal temple is used, the hole through which the modern core metal 10 extends and the hole through which the spring extends are aligned on the same line.
At a location where the tip end and the spring base end are adjacent to each other, the effect of reinforcing the modern by the core metal 10 decreases. In particular, it is a problem in the following cases.

The length of the temple from the front to the 0 point of half of the modern also affects the quality of the fitting. One of the adjustments of the temple length is to change the bending position of the modern, and in order to lengthen the adjustment, the modern is displaced with respect to the core metal 10 toward the tip of the modern. By doing so, a cavity is formed between the tip of the cored bar 10 and the spring base end by the above-mentioned displacement of the modern, and the strength of the modern is further reduced.

On the other hand, in the case where a plurality of wires or leaf springs are arranged in parallel, as shown in FIG. 5, the wires or leaf springs can be embedded in a modern manner by extending on both sides of the cored bar 10 and the front of the modern can be shown. When adjusting the temple length for a long time, compensate for the decrease in the strength of the modern due to the cavity shown in the modern.

In the present invention, when a modern or plastic temple is produced by injection molding, only the shim may be simultaneously formed together with the necessary members.

[0031]

As described above, the present invention has an effect that fitting of the temple bending portion of the spectacles to the back of the ear can be achieved simply and accurately.

[Brief description of drawings]

FIG. 1 is a front view of a main part showing an embodiment of the present invention.

FIG. 2 is a rear view of a main part showing a wearing state of the spectacle frame of FIG.

FIG. 3 shows a side view of the spectacle frame of FIG.

FIG. 4 is a side view of a main part showing another embodiment of the present invention.

FIG. 5 is a side view of a main portion showing a modified example of a wire or leaf spring for attachment of a chisel according to the present invention.

FIG. 6 is a plan view showing an outline of a concavo-convex shape of a back side of the ear that should hold the temple bending portion.

[Explanation of symbols]

 1 Temple 10 Core Bar 11 Temple Bend 2 Spring 3 Only

Claims (2)

[Claims] 1. A temple curved portion fixed or retained on the back of the ear is slightly shorter than the standard length of a general temple curved portion and approximately conforms to the irregular shape of the temporal portion. In addition to being shaped, the temple end is attached only by a wire or a leaf spring with a flexible spring force at a position that comes into contact with the temporal region in the second half area of the concave portion of the uneven portion of the temporal region. An eyeglass frame characterized by. 2. A temple bending portion fixed or retained on the back of the ear is a little shorter than the standard length of a general temple bending portion, and has a concavo-convex shape on the temporal portion. A part that contacts the temporal region in the latter half region of the concave portion of the concave and convex portion of the temporal portion, while forming a roughly conformal shape and only a plurality of parallel lines or leaf springs with a flexible spring force on the temple end. An eyeglass frame characterized by being attached to and attached to.